<template>
  <a-spin :spinning="cardLoading">
    <a-card :bordered="false">
      <div class="table-page-search-wrapper" v-if="hasPerm('sysFileInfo:page')">
        <a-form layout="inline">
          <a-row :gutter="48">
            <a-col :md="8" :sm="24">
              <a-form-item label="存储位置">
                <a-select v-model="queryParam.fileLocation" placeholder="请选择存储位置" >
                  <a-select-option v-for="(item,index) in fileLocationDictTypeDropDown" :key="index" :value="item.code" >{{ item.value }}</a-select-option>
                </a-select>
              </a-form-item>
            </a-col>
            <a-col :md="8" :sm="24">
              <a-form-item label="文件仓库">
                <a-input v-model="queryParam.fileBucket" placeholder="请输入文件仓库"/>
              </a-form-item>
            </a-col>
            <template v-if="advanced">
              <a-col :md="8" :sm="24">
                <a-form-item label="文件名称">
                  <a-input v-model="queryParam.fileOriginName" placeholder="请输入文件名称（上传时候的文件名）"/>
                </a-form-item>
              </a-col>
            </template>
            <a-col :md="!advanced && 8 || 24" :sm="24">
              <span class="table-page-search-submitButtons" :style="advanced && { float: 'right', overflow: 'hidden' } || {} ">
                <a-button type="primary" @click="$refs.table.refresh(true)" >查询</a-button>
                <a-button style="margin-left: 8px" @click="() => queryParam = {}">重置</a-button>
                <a @click="toggleAdvanced" style="margin-left: 8px">
                  {{ advanced ? '收起' : '展开' }}
                  <a-icon :type="advanced ? 'up' : 'down'"/>
                </a>
              </span>
            </a-col>
          </a-row>
        </a-form>
      </div>
      <div class="table-operator" v-if="hasPerm('sysFileInfo:upload')">
        <a-upload
          v-if="hasPerm('sysFileInfo:upload')"
          name="file"
          :multiple="true"
          :customRequest="customRequest"
          :showUploadList="false"
        >
          <a-button> <a-icon type="upload" />上传文件</a-button>
        </a-upload>
      </div>
      <s-table
        ref="table"
        size="default"
        :columns="columns"
        :data="loadData"
        :alert="true"
        :rowKey="(record) => record.id"
        :rowSelection="{ selectedRowKeys: selectedRowKeys, onChange: onSelectChange }"
      >
        <span slot="fileOriginName" slot-scope="text">
          <ellipsis :length="10" tooltip>{{ text }}</ellipsis>
        </span>
        <span slot="fileObjectName" slot-scope="text">
          <ellipsis :length="10" tooltip>{{ text }}</ellipsis>
        </span>
        <span slot="fileLocation" slot-scope="text">
          {{ fileLocationFilter(text) }}
        </span>
        <span slot="fileSuffix" slot-scope="text">
          <a-tag color="blue">{{ text }}</a-tag>
        </span>
        <span slot="action" slot-scope="text, record">
          <a v-if="hasPerm('sysFileInfo:download')" @click="sysFileInfoDownload(record)">下载</a>
          <a-divider type="vertical" v-if="hasPerm('sysFileInfo:download') & hasPerm('sysFileInfo:detail')"/>
          <a v-if="hasPerm('sysFileInfo:detail')" @click="$refs.detailForm.detail(record)">详情</a>
          <a-divider type="vertical" v-if="hasPerm('sysFileInfo:detail') & hasPerm('sysFileInfo:delete')"/>
          <a-popconfirm v-if="hasPerm('sysFileInfo:delete')" placement="topRight" title="确认删除？" @confirm="() => sysFileInfoDelete(record)">
            <a>删除</a>
          </a-popconfirm>
          <a-divider type="vertical" v-if="(hasPerm('sysFileInfo:preview') & record.fileSuffix === 'png' || record.fileSuffix === 'jpeg' || record.fileSuffix === 'jpg'|| record.fileSuffix === 'gif'|| record.fileSuffix === 'tif' || record.fileSuffix === 'bmp' ) & hasPerm('sysFileInfo:delete')"/>
          <a v-if="(hasPerm('sysFileInfo:preview') & record.fileSuffix === 'png' || record.fileSuffix === 'jpeg'|| record.fileSuffix === 'jpg'|| record.fileSuffix === 'gif'|| record.fileSuffix === 'tif' || record.fileSuffix === 'bmp' )" @click="$refs.previewForm.preview(record)">预览</a>
        </span>
      </s-table>
      <detail-form ref="detailForm" @ok="handleOk" v-if="hasPerm('sysFileInfo:detail')"/>
      <preview-form ref="previewForm" v-if="hasPerm('sysFileInfo:preview')"/>
    </a-card>
  </a-spin>
</template>
<script>
import { STable, Ellipsis } from '@/components';
import { sysDictTypeDropDown } from '@/api/modular/system/dictManage';
import { sysFileInfoPage, sysFileInfoDelete, sysFileInfoUpload, sysFileInfoDownload } from '@/api/modular/system/fileManage';
import detailForm from './detailForm';
import previewForm from './previewForm';
export default {
  components: {
    STable,
    Ellipsis,
    detailForm,
    previewForm,
  },
  data() {
    return {
      // 高级搜索 展开/关闭
      advanced: false,
      // 查询参数
      queryParam: {},
      // 表头
      columns: [
        {
          title: '存储位置',
          dataIndex: 'fileLocation',
          scopedSlots: { customRender: 'fileLocation' },
        },
        {
          title: '文件仓库',
          dataIndex: 'fileBucket',
        },
        {
          title: '文件名称',
          dataIndex: 'fileOriginName',
          scopedSlots: { customRender: 'fileOriginName' },
        },
        {
          title: '文件后缀',
          dataIndex: 'fileSuffix',
          scopedSlots: { customRender: 'fileSuffix' },
        },
        {
          title: '文件大小',
          dataIndex: 'fileSizeInfo',
        },
        {
          title: '唯一标识id',
          dataIndex: 'fileObjectName',
          scopedSlots: { customRender: 'fileObjectName' },
        },

      ],
      // 加载数据方法 必须为 Promise 对象
      loadData: parameter => {
        return sysFileInfoPage(Object.assign(parameter, this.queryParam)).then((res) => {
          return res.data;
        });
      },
      cardLoading: false,
      fileLocationDictTypeDropDown: [],
      selectedRowKeys: [],
      selectedRows: [],
    };
  },
  created() {
    this.sysDictTypeDropDown();
    if (this.hasPerm('sysPos:edit') || this.hasPerm('sysPos:delete')) {
      this.columns.push({
        title: '操作',
        width: '200px',
        dataIndex: 'action',
        scopedSlots: { customRender: 'action' },
      });
    }
  },
  methods: {
    fileLocationFilter(fileLocation) {
      // eslint-disable-next-line eqeqeq
      const values = this.fileLocationDictTypeDropDown.filter(item => item.code == fileLocation);
      if (values.length > 0) {
        return values[0].value;
      }
    },
    /**
       * 获取字典数据
       */
    sysDictTypeDropDown() {
      sysDictTypeDropDown({ code: 'file_storage_location' }).then((res) => {
        this.fileLocationDictTypeDropDown = res.data;
      });
    },
    /**
       * 下载文件（所有文件）
       */
    sysFileInfoDownload(record) {
      this.cardLoading = true;
      sysFileInfoDownload({ id: record.id }).then((res) => {
        this.cardLoading = false;
        this.downloadfile(res);
        // eslint-disable-next-line handle-callback-err
      }).catch((err) => {
        this.cardLoading = false;
        this.$message.error('下载错误：获取文件流错误');
      });
    },
    downloadfile(res) {
      var blob = new Blob([res.data], { type: 'application/octet-stream;charset=UTF-8' });
      var contentDisposition = res.headers['content-disposition'];
      var patt = new RegExp('filename=([^;]+\\.[^\\.;]+);*');
      var result = patt.exec(contentDisposition);
      var filename = result[1];
      var downloadElement = document.createElement('a');
      var href = window.URL.createObjectURL(blob); // 创建下载的链接
      var reg = /^["](.*)["]$/g;
      downloadElement.style.display = 'none';
      downloadElement.href = href;
      downloadElement.download = decodeURI(filename.replace(reg, '$1')); // 下载后文件名
      document.body.appendChild(downloadElement);
      downloadElement.click(); // 点击下载
      document.body.removeChild(downloadElement); // 下载完成移除元素
      window.URL.revokeObjectURL(href);
    },
    sysFileInfoDelete(record) {
      sysFileInfoDelete(record).then((res) => {
        if (res.success) {
          this.$message.success('删除成功');
          this.$refs.table.refresh();
        } else {
          this.$message.error('删除失败：' + res.message);
        }
      }).catch((err) => {
        this.$message.error('删除错误：' + err.message);
      });
    },
    toggleAdvanced() {
      this.advanced = !this.advanced;
    },
    /**
       * 上传文件
       */
    customRequest(data) {
      const formData = new FormData();
      formData.append('file', data.file);
      sysFileInfoUpload(formData).then((res) => {
        if (res.success) {
          this.$message.success('上传成功');
          this.$refs.table.refresh();
        } else {
          this.$message.error('上传失败：' + res.message);
        }
      });
    },
    handleOk() {
      this.$refs.table.refresh();
    },
    onSelectChange(selectedRowKeys, selectedRows) {
      this.selectedRowKeys = selectedRowKeys;
      this.selectedRows = selectedRows;
    },
  },
};
</script>
<style lang="less">
  .table-operator {
    margin-bottom: 18px;
  }
  button {
    margin-right: 8px;
  }
</style>
